Barrel-filter.



No. 812,438. PATENTED FEB. 18, 1906. DE WITT C. MOSHER.

BARREL FILTER.

APPLICATION FILED APR.29, 1903.

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DE WITT C. MOSHER, OF MANITOU, COLORADO.

BARREL-FILTER.

Specication of Letters Patent.

Patented Feb. 13, 1906.

To a/ZZ whom it may concern:

Be it known that I, DE WITT C. MosHER, a citizen of the United States,residing at Manitou, State of Colorado, have invented certain new anduseful Improvements in Barrel-Filters, of which the following is aspecification.

This invention relates to that type of iilters in which rotatablelead-lined barrels are employed g and it consists in constructing thefilter and securing the parts within the barrel so as to secure greatstrength and rigidity, facilitate and reduce the cost of manufacture,and generally improve the construction, as fully set forth hereinafterand as illustrated in the accompanying drawings, in which- Figure 1 is alongitudinal section of a barrel-filter embodying my invention. Fig 2 isa cross-section of part of the barrel, enlarged. Fig. 3 is a section onthe line 3 3, Fig. 2.

The barrel A, of any suitable construction, is shown as mounted torotateon trunnions and is provided with alead lining l and with suitable inletand outlet openings, as usual. Within the barrel is a filter B, which ismade in the form of an arch, so that it is better fitted to resist thethrust and Weight of the materials, although it may be flat, ifrequired, and this filter is provided with iron supports to add to itsstrength and rigidity, and the iron supports are covered with lead toprotect them from the action of the chlorinating liquor, and whereverthe lead covering of the filter meets the lining of the barrel the twoare burned together, so as to prevent the liquor from gaining access tothe iron supports and the fine material from entering the joints.

In the construction shown there are side rails 2 2, each of which isbolted by bolts 3 to the barrel, extends longitudinally thereof, and issurrounded by a lead covering or casing 4, burned to the lining. Uponthe rails 2 2 rest the ends of the bows or bars C, each of which has aniron core 5 and a surrounding lead sleeve or casing 6. These bows C haveholes 7 in the ends by which to bolt them in place against the siderails 2, the bolts 8 extending through the side of the barrel into theholes 7. The ends of the lead casings 6 are burned to the lining, so asto be practically integral with the latter, and upon these supports Crests the filtering-bed D, which may be a perforated lead late or sheetburned at the edges to the lining of the barrel or may be otherwise madeof a single or plurality of parts covered by the filteringcloth H, and,if desired, to secure additional rigidity and strength and hold thefilteringbed in place there may be cross-pieces E, extending eitherlongitudinally or transversely. As shown, the cross-pieces are in theform of bows like the bows C, extending parallel to the bows C andconnected in like manner at their ends, Preferably the bows C are placedparallel a short distancefrom each other, while the bracing-bows E areseparated to a greater extent.

^ Without limiting myself to the precise construction and arrangementset forth, I claim as my invention- 1. A barrel-filter composed of abarrel having a lead lining, and a filter consisting of an arched bedand transverse, arched rigid cores supporting it, with surrounding leadcasings made integral with the lining, substantially as specified.

2. The combination with a lead-lined barrel, of an arched filtering-bedsupported upon a series of transverse, arched rigid bars abuttingagainst the barrel at the ends and covered with lead casings integralwith the lining, substantially as set forth.

3. The combination with a lead-lined barrel, ofvan arched filtercomposed of arched cores having surrounding lead casings and supportinga filtering-bed, substantially as described.

4. The combination with a lead-lined barrel, of a filter-bed, havingsupports with rigid cores and surrounding lead casings integral with thelining and by cross-pieces at the top of the bed also of rigid coreswith lead casings integral with the lining, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of twosubscribing witnesses.

DE WITT C. MOSHER.

Witnesses: RUrUs CfTHAYER,

CLARENCE O. HAMLIN.

